I could go into a ton of details about FAMACHA and parasites, etc. But I think the easiest thing for me to do is save my breath (or in this case, fingers) and just post this link ... http://www.extension.umn.edu/meatgoats/ ... ostels.pdf This downloadable pdf (yes you can save it to your pc for future reference and printing !!) is a very explanatory document about parasites and FAMACHA. It even includes an in color FAMACHA chart !! And shows you HOW to check the lids, rate them, etc. ! It's a VERY handy guide ! I would recommend that any goat owner should save/print this pdf !!